名词
中文翻译：半空间着陆
同义词：
['half-space touchdown', 'half-space takeoff']
例句：
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1. The spacecraft successfully landed on the moon's surface.
宇宙飞船成功地在月球表面着陆。
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2.The astronauts had to perform a half-space landing before they could safely return to Earth.
宇航员们必须在返回地球之前完成一次半空间着陆。
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3.During the test flight, the pilot executed a precise half-space landing.
在试飞中，飞行员执行了一次精确的半空间着陆。